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Intelligent 6G Wireless Network with Multi-Dimensional Information Perception 被引量:5
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作者 YANG Bei LIANG Xin +3 位作者 LIU Shengnan JIANG Zheng ZHU Jianchi SHE Xiaoming 《ZTE Communications》 2023年第2期3-10,共8页
Intelligence and perception are two operative technologies in 6G scenarios.The intelligent wireless network and information perception require a deep fusion of artificial intelligence(AI)and wireless communications in... Intelligence and perception are two operative technologies in 6G scenarios.The intelligent wireless network and information perception require a deep fusion of artificial intelligence(AI)and wireless communications in 6G systems.Therefore,fusion is becoming a typical feature and key challenge of 6G wireless communication systems.In this paper,we focus on the critical issues and propose three application scenarios in 6G wireless systems.Specifically,we first discuss the fusion of AI and 6G networks for the enhancement of 5G-advanced technology and future wireless communication systems.Then,we introduce the wireless AI technology architecture with 6G multidimensional information perception,which includes the physical layer technology of multi-dimensional feature information perception,full spectrum fusion technology,and intelligent wireless resource management.The discussion of key technologies for intelligent 6G wireless network networks is expected to provide a guideline for future research. 展开更多
关键词 6G wireless network artificial intelligence multi-dimensional information perception full spectrum fusion
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Interpersonal Perception in Virtual Groups: Examining Homophily, Identification and Individual Attraction Using Social Relations Model in Network
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作者 Zuoming Wang 《Social Networking》 2023年第2期45-56,共12页
With the penetration of the Internet, virtual groups have become more and more popular. The reliability and accuracy of interpersonal perception in the virtual environment is an intriguing issue. Using the Social rela... With the penetration of the Internet, virtual groups have become more and more popular. The reliability and accuracy of interpersonal perception in the virtual environment is an intriguing issue. Using the Social relations model (SRM) [1], this paper investigates interpersonal perception in virtual groups from a multilevel perspective. In particular, it examines the following three areas: homophily, identification, and individual attraction, and explores how much of these directional and dyadic relational evaluations can be attributed to the effect of the actor, the partner, and the relationship. 展开更多
关键词 Virtual Groups Interpersonal perception Social relations Model HOMOPHILY IDENTIFICATION Individual Attraction
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LREGT:Local Relationship Enhanced Gated Transformer for Image Captioning
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作者 Yuting He Zetao Jiang 《Computers, Materials & Continua》 2025年第9期5487-5508,共22页
Existing Transformer-based image captioning models typically rely on the self-attention mechanism to capture long-range dependencies,which effectively extracts and leverages the global correlation of image features.Ho... Existing Transformer-based image captioning models typically rely on the self-attention mechanism to capture long-range dependencies,which effectively extracts and leverages the global correlation of image features.However,these models still face challenges in effectively capturing local associations.Moreover,since the encoder extracts global and local association features that focus on different semantic information,semantic noise may occur during the decoding stage.To address these issues,we propose the Local Relationship Enhanced Gated Transformer(LREGT).In the encoder part,we introduce the Local Relationship Enhanced Encoder(LREE),whose core component is the Local Relationship Enhanced Module(LREM).LREM consists of two novel designs:the Local Correlation Perception Module(LCPM)and the Local-Global Fusion Module(LGFM),which are beneficial for generating a comprehensive feature representation that integrates both global and local information.In the decoder part,we propose the Dual-level Multi-branch Gated Decoder(DMGD).It first creates multiple decoding branches to generate multi-perspective contextual feature representations.Subsequently,it employs the Dual-Level Gating Mechanism(DLGM)to model the multi-level relationships of these multi-perspective contextual features,enhancing their fine-grained semantics and intrinsic relationship representations.This ultimately leads to the generation of high-quality and semantically rich image captions.Experiments on the standard MSCOCO dataset demonstrate that LREGT achieves state-of-the-art performance,with a CIDEr score of 140.8 and BLEU-4 score of 41.3,significantly outperforming existing mainstream methods.These results highlight LREGT’s superiority in capturing complex visual relationships and resolving semantic noise during decoding. 展开更多
关键词 Image captioning local relation enhancement local correlation perception dual-level gating mechanism
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Illness Perception in Gestational Trophoblastic Disease Patients: How Mental Representations Affect Anxiety, Depression, and Infertility-Related Stress 被引量:1
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作者 Letizia Carnelli Valentina E. Di Mattei +7 位作者 Martina Mazzetti Martina Bernardi Rossella Di Pierro Alice Bergamini Francesca Pella Giorgia Mangili Lucio Sarno Massimo Candiani 《Open Journal of Medical Psychology》 2017年第1期1-15,共15页
Gestational Trophoblastic Disease encompasses a group of pregnancy-related disorders that derive from the placenta. Taking Leventhal’s Common Sense Model as a starting point, this study aims to investigate how illnes... Gestational Trophoblastic Disease encompasses a group of pregnancy-related disorders that derive from the placenta. Taking Leventhal’s Common Sense Model as a starting point, this study aims to investigate how illness perception could influence patients’ psychological adaptation to these rare diseases. Thirty-seven women completed: the Illness Perception Questionnaire-Revised, the Beck Depression Inventory Short Form, the State-Trait Anxiety Inventory, and the Fertility Problem Inventory. Results show that the perception of severe illness consequences significantly predicts the level of anxiety patients reported at the time of questionnaire completion. Furthermore, mental representations of illness present a significant association with infertility-related stress. Specifically, the belief in the efficacy of the treatment results in fewer feelings of discomfort and isolation from family and social context due to infertility-related problems. Since patients’ illness perception was found to have a specific impact on both anxiety and infertility-related stress, this variable should be considered in the planning of a clinical intervention. 展开更多
关键词 GESTATIONAL Trophoblastic Disease Illness perception ANXIETY DEPRESSION Infertility-related STRESS
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Symptoms, Illness Perceptions, Self-Efficacy and Health-Related Quality of Life Following Colorectal Cancer Treatment
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作者 Ann-Caroline Johansson Malin Axelsson +2 位作者 Gunne Grankvist Ina Berndtsson Eva Brink 《Open Journal of Nursing》 2018年第9期591-604,共14页
Introduction: Lower health-related quality of life (HRQoL) is associated with fatigue, poor mental and poor gastrointestinal health during the first three months after colorectal cancer (CRC) treatment. Research indic... Introduction: Lower health-related quality of life (HRQoL) is associated with fatigue, poor mental and poor gastrointestinal health during the first three months after colorectal cancer (CRC) treatment. Research indicates that maintaining usual activities has a positive impact on HRQoL after treatment for CRC. Illness perceptions have been associated with HRQoL in other cancer diseases, and self-efficacy has been associated with HRQoL in gastrointestinal cancer survivors. Our knowledge about illness perceptions and self-efficacy in relation to maintaining everyday activities and HRQoL following CRC treatment is incomplete. Aim: To explore associations between HRQoL, fatigue, mental health, gastrointestinal health, illness perceptions and self-efficacy in relation to maintaining everyday activities, three months after surgical CRC treatment. A further aim was to test the Maintain Function Scale in a CRC population. Method: The study was cross-sectional. Forty-six persons participated. Data were collected using questionnaires. Descriptive and analytical statistics were used. Results: Persons who were more fatigued, depressed, worried, and had more diarrhea were more likely to report lower HRQoL. Increased fatigue and diarrhea were associated with decreased HRQoL. Concerning illness perceptions, persons who reported negative emotions and negative consequences of CRC were more likely to report lower HRQoL. Persons scoring higher on self-efficacy were more likely to report higher HRQoL. Increased self-efficacy was associated with increased HRQoL. The Maintain Function Scale was suitable for assessing self-efficacy in relation to maintaining everyday activities. Conclusions: Nursing support to improve self-efficacy and illness perceptions and to minimize symptoms during recovery should have a favorable impact on HRQoL. 展开更多
关键词 COLORECTAL Cancer HEALTH-relatED Quality of Life Illness perceptionS Recovery SELF-EFFICACY
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Factors Affecting Disease Risk Perception and Self-Management Behaviors among Japanese Long-Term Overseas Volunteers
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作者 Kiriko Sasayama Stuart Gilmour Erika Ota 《Health》 2021年第1期16-30,共15页
Introduction: Many overseas volunteers have worked in low and middle-income countries. However traveling abroad and staying in an unfamiliar environment with inadequate medical infrastructure exposes volunteers to a w... Introduction: Many overseas volunteers have worked in low and middle-income countries. However traveling abroad and staying in an unfamiliar environment with inadequate medical infrastructure exposes volunteers to a wide range of health risks. The aim of this study was to clarify the relationships among disease knowledge and symptoms, disease risk perception, and self-management skills. Methods: This was a questionnaire survey of 189 Japanese who were preparing to volunteer abroad. A factor analysis was conducted on 13 items (six general risk events and seven major diseases) of risk perception. Correlation analysis was performed between the identified risk perception factors and disease knowledge and symptoms. Risk perception scores by factors from the seven disease items were compared between the Self-management Score (SMS) group and disease knowledge and risk of symptoms group, using T-tests. St. Luke’s International University Ethics Committee (19-A092) approved this study. Results: Many participants expected to suffer from digestive diseases (69.3%) and dermatitis (55%) in the field. On the other hand, few expected high risk of malaria (26.5%) or dengue fever (36%). Factor analysis yielded robust factor loadings creating a “Dread” and an “Unknown” factor accounting for 62.2% of total variance. Strong correlation was not found between SMS and disease risk perception. A weak negative correlation was observed in dengue fever, digestive disorders, and dermatitis (r = <span style="white-space:nowrap;">&minus;0.20 to <span style="white-space:nowrap;">&minus;0.25, p < 0.001) on the “Unknown” factor. A high SMS score was associated with a lower “Unknown” factor score for malaria, diarrhea, dermatitis, and dental disorders. In addition, higher disease knowledge was significantly associated with higher “Dread” factor score for dental disorders. Conclusions: Self-management skills and disease knowledge will enable higher risk awareness of common diseases and high lethality diseases. 展开更多
关键词 Overseas Volunteers Risk perception Self-Management-Skills Travel-related Diseases
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Parents’ Perceptions and Judgment Formation Process of Their Infants’ Quality of Life
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作者 Mari Ikeda Iori Sato +4 位作者 Takafumi Soejima Ami Setoyama Kyoko Kobayashi Rieko Fukuzawa Kiyoko Kamibeppu 《Open Journal of Nursing》 2020年第12期1219-1232,共14页
<strong>Purpose:</strong> We explored parents’ perceptions and judgment formation processes concerning their infants’ health-related quality of life (HRQOL). <strong>Method:</strong> The Peds... <strong>Purpose:</strong> We explored parents’ perceptions and judgment formation processes concerning their infants’ health-related quality of life (HRQOL). <strong>Method:</strong> The PedsQL<sup>TM</sup> Infant Scales—an instrument specifically designed for infants aged 1 - 24 months—were translated into Japanese. Forward and backward translations were performed, evaluating the semantic and conceptual equivalencies. Parents with infants younger than two-years-old were recruited and interviewed using think-aloud and probing techniques. Participants completed the questionnaire while speaking aloud about what came to their mind, what they thought each question meant, and how they reached each answer. <strong>Results:</strong> Seven mothers and three fathers participated. The median age was 33.4 (28 - 43) years. Four had infants younger than six-months-old. All infants were healthy. Parents’ perceptions of their infants’ HRQOL varied across their ages. Some parents with infants younger than six months experienced difficulty discussing “emotional functioning” and “cognitive functioning” because their infants were too young to articulate the actions mentioned in the items. In those cases, the parents responded, “never a problem”. Seventy-five percent of parents recalled their infants’ daily “physical functioning”, while only 58% recalled “physical symptoms”. Some parents’ perceptions and judgment formation were compromised by their own perceptions. For example, they answered “often a problem” when the items were problematic to themselves instead of to their child. However, many distinguished their infants’ HRQOL from their own perceptions, indicating they understood the intention of the questionnaire. <strong>Conclusion:</strong> Parents’ formed judgement may compromise by their own perceptions. The result of this study will be helpful in improving healthcare communication and interpreting parents’ judgments of their infants’ HRQOL in future studies. 展开更多
关键词 Health-related Quality of Life INFANT Judgment Formation perception Scale Translation
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基于视觉感知的三维空间相似关系量化计算
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作者 贺彪 林浩嘉 +3 位作者 郭仁忠 蒯希 马丁 张琛 《测绘学报》 北大核心 2026年第1期138-153,共16页
空间相似关系是空间数据多尺度表达的重要基础理论之一,基础空间数据从二维到三维的发展给空间相似关系研究带来了挑战。本文提出三维空间相似关系的概念,针对其量化计算受尺度效应制约的问题,提出一种基于视觉感知的量化计算方法。首先... 空间相似关系是空间数据多尺度表达的重要基础理论之一,基础空间数据从二维到三维的发展给空间相似关系研究带来了挑战。本文提出三维空间相似关系的概念,针对其量化计算受尺度效应制约的问题,提出一种基于视觉感知的量化计算方法。首先,以多尺度地图空间相似关系理论为基础,明确三维空间相似关系的定义,总结空间相似关系由二维拓展至三维所面临的核心问题。其次,深度融合三维数据属性、三维渲染机制与视觉感知机理,剖析三维空间相似关系的视觉感知过程、机理与特性。在此基础上,提出以视觉感知为导向的反向计算策略,建立三维空间至屏幕空间的计算转换机制,实现三维空间相似关系的量化表征与计算。试验与应用表明,本文方法实现了尺度自适应的三维空间相似关系计算,能够为三维建筑场景细节层次(LOD)构建与连续可视化提供支撑。 展开更多
关键词 空间相似关系 视觉感知 多尺度表达 制图综合 三维GIS
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经验获益还是时间损失?老化心态对时尚消费的影响机制
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作者 王静 王雪华 范秀成 《心理学报》 北大核心 2026年第1期151-165,I0012-I0016,共20页
人口老龄化已成为全球性现象,积极应对老龄化的有效举措之一是大力发展银发经济。为充分释放老年人口消费潜力,需洞察不同老化心态对老年消费行为的影响。本研究通过1个调查和4个实验,检验了老年人看待过去时“经验获益”(vs.“时间损失... 人口老龄化已成为全球性现象,积极应对老龄化的有效举措之一是大力发展银发经济。为充分释放老年人口消费潜力,需洞察不同老化心态对老年消费行为的影响。本研究通过1个调查和4个实验,检验了老年人看待过去时“经验获益”(vs.“时间损失”)心态对时尚消费的作用机制和边界条件。研究表明:相比“时间损失”心态,“经验获益”心态将提升时尚消费意愿,老化威胁感知在老化心态与时尚消费的关系中起中介作用。同时,死亡凸显调节不同老化心态对时尚消费的影响。低死亡凸显情况下,持“经验获益”(vs.“时间损失”)老化心态的个体更偏好时尚消费;而高死亡凸显情况下,两者之间差异消失。本文从“经验获益”与“时间损失”视角,剖析老化心态及其对时尚消费的作用,丰富了老年消费、时尚消费和年老身份建构方面的文献。 展开更多
关键词 老化心态 时尚消费 老化威胁感知 时间损失 经验获益
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消极外貌评论感知与大学生体像障碍倾向的关系
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作者 谢朝阳 向莉莉 +5 位作者 任怡臻 关承斌 安献丽 王汉卿 乔慧芬 郝阳 《中国临床心理学杂志》 北大核心 2026年第1期23-31,共9页
目的:分析消极外貌评论感知与大学生体像障碍倾向的关系,探究容貌焦虑和身体监视的中介与外貌负面评价恐惧的调节作用。方法:采用消极外貌评论感知量表、容貌焦虑量表、身体监视量表、外貌负面评价恐惧量表和体像障碍倾向量表对2637名... 目的:分析消极外貌评论感知与大学生体像障碍倾向的关系,探究容貌焦虑和身体监视的中介与外貌负面评价恐惧的调节作用。方法:采用消极外貌评论感知量表、容貌焦虑量表、身体监视量表、外貌负面评价恐惧量表和体像障碍倾向量表对2637名大学生施测。结果:(1)未检出体像障碍倾向占26.58%,轻度倾向占32.04%,中度倾向占17.82%,重度倾向占23.55%;(2)容貌焦虑和身体监视共同中介了消极外貌感知与体像障碍倾向之间的联系;(3)外貌负面评价恐惧显著增强了消极外貌评论感知对容貌焦虑、身体监视以及体像障碍倾向的影响。结论:消极外貌评论不仅直接影响大学生体像障碍倾向,还会通过容貌焦虑和身体监视产生间接作用;此外,对于高水平外貌负面评价恐惧的个体,消极外貌评论对容貌焦虑、身体监视以及体像障碍倾向的影响更加明显。 展开更多
关键词 消极外貌评论感知 容貌焦虑 身体监视 外貌负面评价恐惧 体像障碍倾向
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妊娠相关骨盆带疼痛孕妇疾病感知与应对方式的质性研究
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作者 林泽珊 王志坚 +5 位作者 聂庆文 赵雨晴 朱静怡 林沁楣 丁亚楠 周宏珍 《护理学报》 2026年第4期13-17,共5页
目的分析孕妇对妊娠相关骨盆带疼痛(pregnancy-related pelvic girdle pain,PPGP)的疾病感知特征与应对方式,为临床管理PPGP提供参考依据。方法基于自我调节常识模型,采用描述性质性研究,通过目的抽样法选取广州市某三级甲等医院产科门... 目的分析孕妇对妊娠相关骨盆带疼痛(pregnancy-related pelvic girdle pain,PPGP)的疾病感知特征与应对方式,为临床管理PPGP提供参考依据。方法基于自我调节常识模型,采用描述性质性研究,通过目的抽样法选取广州市某三级甲等医院产科门诊15名PPGP孕妇进行半结构式访谈,运用定向内容分析法分析数据。结果共提炼出3大主题,12个亚主题:感知疾病的多维度认知特征(疼痛为最突出的症状、生物因素主导归因、预后过于乐观、诊断价值被弱化);感知疾病的多重挑战(日常功能限制、工作状态不佳、家庭压力增加、负性情绪困扰);感知疾病的多样化应对与效果(主动就医,疗效有差异;自我调节,改善有限;家庭支持,难解根本;默默忍受,消极回避)。结论PPGP孕妇存在疾病感知局限,面临多重现实挑战且应对效能不足。需强化专业信息引导,构建身心-职场-家庭多维支持体系,优化循证个性化应对策略,提升孕妇疾病感知水平与应对能力,促进PPGP临床规范化管理。 展开更多
关键词 妊娠相关骨盆带疼痛 孕妇 疾病感知 应对方式 质性研究
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德国主流媒体中的法国形象认知与建构——以《南德意志报》(2015—2025)为例
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作者 周奕珺 崔丹丹 《法语国家与地区研究(中法文)》 2026年第1期58-73,共16页
深入研究德国主流媒体中的法国形象认知与建构,不仅能够从他者角度映射当今法国的发展现状,亦能体现新的世界格局下德国政府对德法关系的态度。本研究搜集LexisNexis新闻库中2015—2025年《南德意志报》涉法报道共80篇,采用语料库辅助... 深入研究德国主流媒体中的法国形象认知与建构,不仅能够从他者角度映射当今法国的发展现状,亦能体现新的世界格局下德国政府对德法关系的态度。本研究搜集LexisNexis新闻库中2015—2025年《南德意志报》涉法报道共80篇,采用语料库辅助批评话语分析方法进行研究。研究发现,德国将法国视为重要战略伙伴,强调德法深度合作的重要性,同时又对法国社会面临的现代危机持担忧及批判态度。德国媒体认为,法国需回归法兰西精神的核心内涵,在多元文化中重塑价值共识;德法应超越本国价值至上的民族主义模式,强化对欧洲共同身份的认同感,携手深度合作以真正实现欧洲战略自主。 展开更多
关键词 法国形象认知与建构 《南德意志报》 德法关系 欧洲战略自主
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A distributed approach for lidar-based relative state estimation of multi-UAV in GPS-denied environments 被引量:6
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作者 Hongming SHEN Qun ZONG +3 位作者 Hanchen LU Xuewei ZHANG Bailing TIAN Lei HE 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2022年第1期59-69,共11页
In this paper,we present a distributed framework for the lidar-based relative state estimator which achieves highly accurate,real-time trajectory estimation of multiple Unmanned Aerial Vehicles(UAVs)in GPS-denied envi... In this paper,we present a distributed framework for the lidar-based relative state estimator which achieves highly accurate,real-time trajectory estimation of multiple Unmanned Aerial Vehicles(UAVs)in GPS-denied environments.The system builds atop a factor graph,and only on-board sensors and computing power are utilized.Benefiting from the keyframe strategy,each UAV performs relative state estimation individually and broadcasts very partial information without exchanging raw data.The complete system runs in real-time and is evaluated with three experiments in different environments.Experimental results show that the proposed distributed approach offers comparable performance with a centralized method in terms of accuracy and real-time performance.The flight test demonstrates that the proposed relative state estimation framework is able to be used for aggressive flights over 5 m/s. 展开更多
关键词 Distributed relative state estimation GPS-denied environments Lidar-based perception Multi-UAV system Pose-graph optimization
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Design of similarity measure for discrete data and application to multi-dimension 被引量:1
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作者 LEE Myeong-ho 魏荷 +2 位作者 LEE Sang-hyuk LEE Sang-min SHIN Seung-soo 《Journal of Central South University》 SCIE EI CAS 2013年第4期982-987,共6页
Similarity measure design for discrete data group was proposed. Similarity measure design for continuous membership function was also carried out. Proposed similarity measures were designed based on fuzzy number and d... Similarity measure design for discrete data group was proposed. Similarity measure design for continuous membership function was also carried out. Proposed similarity measures were designed based on fuzzy number and distance measure, and were proved. To calculate the degree of similarity of discrete data, relative degree between data and total distribution was obtained. Discrete data similarity measure was completed with combination of mentioned relative degrees. Power interconnected system with multi characteristics was considered to apply discrete similarity measure. Naturally, similarity measure was extended to multi-dimensional similarity measure case, and applied to bus clustering problem. 展开更多
关键词 similarity measure multi-dimension discrete data relative degree power interconnected system
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The effect of acculturation in the concordance of oral health related quality of life in Latino children and their parents
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作者 Yltze P. Cubas Maria F. Orellana 《Open Journal of Epidemiology》 2013年第2期95-104,共10页
The Latino population is the fastest growing and the largest minority group in the United States comprising 16% of the population younger than 18 years of age. Yet, little is known about the effect of acculturation in... The Latino population is the fastest growing and the largest minority group in the United States comprising 16% of the population younger than 18 years of age. Yet, little is known about the effect of acculturation in oral health related quality of life in Latino children and their parents. Objective: The objective of this study was to assess the effect of acculturation in parent and child’s perceptions of the child’s oral health status and oral health related quality of life (OHRQoL) as well as the effect in the concordance between children and parents/caregivers. Method: Sixty-three Latino children between the ages of 8 and 15, and their parents were recruited from the waiting room at the University of California, San Francisco Orthodontic and Pediatric Clinics. Parent and children each separately completed the Child Oral Health Impact Profile questionnaire (COHIP) for children and COHIP for parent/caregiver. Results: Of the sixty-three children, fifteen children (23.8%) had a more negative perception of their oral health than their parents whereas twenty-three children (36.5%) had a more positive perception. In terms of agreement between children and parents, questions about oral health showed the lowest level of agreement (34.9%) and self-image questions the highest (55.6%). Conclusion: The study findings indicate that the more acculturated the child, the more negative their perception of their oral health. The level of disagreement between parent and child, underscores the importance of obtaining both the child and parent OHRQoL perceptions. 展开更多
关键词 ORAL HEALTH related Quality of Life (OHRQoL) CHILDREN Child ORAL HEALTH Impact Profile (COHIP) ACCULTURATION CONCORDANCE perception
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基于全域信息融合和多维关系感知的命名实体识别模型 被引量:1
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作者 胡婕 武帅星 +1 位作者 曹芝兰 张龑 《计算机应用》 北大核心 2025年第5期1511-1519,共9页
现有的基于双向长短时记忆(BiLSTM)网络的命名实体识别(NER)模型难以全面理解文本的整体语义以及捕捉复杂的实体关系。因此,提出一种基于全域信息融合和多维关系感知的NER模型。首先,通过BERT(Bidirectional Encoder Representations fr... 现有的基于双向长短时记忆(BiLSTM)网络的命名实体识别(NER)模型难以全面理解文本的整体语义以及捕捉复杂的实体关系。因此,提出一种基于全域信息融合和多维关系感知的NER模型。首先,通过BERT(Bidirectional Encoder Representations from Transformers)获取输入序列的向量表示,并结合BiLSTM进一步学习输入序列的上下文信息。其次,提出由梯度稳定层和特征融合模块组成的全域信息融合机制:前者使模型保持稳定的梯度传播并更新优化输入序列的表示,后者则融合BiLSTM的前后向表示获取更全面的特征表示。接着,构建多维关系感知结构学习不同子空间单词的关联性,以捕获文档中复杂的实体关系。此外,使用自适应焦点损失函数动态调整不同类别实体的权重,提高模型对少数类实体的识别性能。最后,在7个公开数据集上将所提模型和11个基线模型进行对比,实验结果表明所提模型的F1值均优于对比模型,可见该模型的综合性较优。 展开更多
关键词 命名实体识别 全域信息融合机制 梯度稳定层 多维关系感知 自适应焦点损失
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美国精英对中拉关系的认知及其影响 被引量:2
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作者 严谨 邵静怡 《现代国际关系》 北大核心 2025年第4期87-102,139,140,共18页
近几年来,美国学术和战略研究圈对中国与拉丁美洲关系的关注度持续升高,逐步形成对中拉关系及中国在拉美角色的若干基本共识,进而上升为美国决策者对华认知的重要组成部分。基于美国精英的相关认知,自特朗普第一任期以来,美国政府政策... 近几年来,美国学术和战略研究圈对中国与拉丁美洲关系的关注度持续升高,逐步形成对中拉关系及中国在拉美角色的若干基本共识,进而上升为美国决策者对华认知的重要组成部分。基于美国精英的相关认知,自特朗普第一任期以来,美国政府政策就此作出反应,明确将中国定位为在拉美最大竞争对手,进而围绕巩固美拉关系、遏制中拉合作两条主线进行调整和布局。美国对中拉关系的政策反应在中拉关系、美拉关系、中美关系层面产生了深远影响。随着美国日益重视拉美的战略价值并将对拉美战略的重心转向对华竞争,中拉关系发展或将面临更大的外部干扰和不确定性,拉美作为中间地带有可能成为美国对华竞争加剧的重要场域。其中暴露出的问题日益显现,美国在对拉美关系中一直存有“门罗主义”的执念,拉美国家对外交往与合作多元化的自主权长期受到掣肘,中拉关系不时遭遇有色眼镜式甚至妖魔化的评断和对待。面对新的形势,中国与拉美需要不断更新合作模式,同时处理好与美国的关系,推进中美拉三方之间的良性互动。 展开更多
关键词 中拉关系 美国精英 战略认知 新门罗主义
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20世纪60年代印度排华运动的缘起与演变
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作者 朱鹏 唐新亚 《史学月刊》 北大核心 2025年第3期110-119,共10页
20世纪50年代后期,受多种因素的叠加影响,印度对华战略认知发生了根本性的转变,曾被其视为战略伙伴的中国逐步被认定为最具威胁性的战略对手。基于这种认知,印度走上了“以侨制华”的道路,试图利用反华排华活动向中国政府施压,逼迫中国... 20世纪50年代后期,受多种因素的叠加影响,印度对华战略认知发生了根本性的转变,曾被其视为战略伙伴的中国逐步被认定为最具威胁性的战略对手。基于这种认知,印度走上了“以侨制华”的道路,试图利用反华排华活动向中国政府施压,逼迫中国在相关问题上妥协退让。持续的排华运动不仅导致印度华侨社会深受重创,从此一蹶不振,而且致使两国关系雪上加霜,矛盾愈发复杂尖锐。 展开更多
关键词 印度 战略认知 排华运动 中印关系
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同盟视域下的美日技术安全合作:战略逻辑与政策实践
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作者 吴怀中 从伊宁 《国际安全研究》 北大核心 2025年第4期73-98,159,共27页
传统权力政治思维下同盟战略互动更多体现在高政治议题领域,但当前以美日为代表的同盟国家正日益将联盟合作关系拓展至同步覆盖经济与军事的技术安全议题领域。基于威胁制衡与利益平衡的联盟安全理论观点,旨在以盟国间国家利益的威胁认... 传统权力政治思维下同盟战略互动更多体现在高政治议题领域,但当前以美日为代表的同盟国家正日益将联盟合作关系拓展至同步覆盖经济与军事的技术安全议题领域。基于威胁制衡与利益平衡的联盟安全理论观点,旨在以盟国间国家利益的威胁认知视角考察美日推进技术安全合作的深层战略逻辑与政策实践进程,即美日技术安全合作的动机源于双方针对“特定对象国技术崛起”造成国家利益层面的共同战略“威胁”认知。通过技术安全合作,美日一方面针对性遏制中国军事实力发展,另一方面维持并筹谋国际规则制定主导权,以期有效应对中国技术提升所带来的所谓国家安全利益与国家政治利益“威胁”。在政策实践过程中,美日两国历经技术安全合作理念先期聚合、后续双多边协调机制确立直至尖端产业领域政企一体联动的复杂环节进程。由于经济安全议题牵涉国家利益的多个方面,美国在与盟国推进技术安全战略协调的同时,其战略合作成效亦受到同盟内部结构性利益分歧的掣肘。进入“特朗普2.0”执政时期,美国政府将继续以遏压中国为导向的经济安全战略部署,美日技术安全合作或仍维持高强度特征。 展开更多
关键词 技术安全 同盟战略 国家利益 威胁认知 美日关系
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秒内不同时距下自我加工优势效应
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作者 李毕琴 张美霞 +3 位作者 杨少云 黄鹏飞 王爱君 党君华 《心理学报》 北大核心 2025年第9期1529-1539,共11页
客观时距会影响自我相关刺激下的时距知觉,但秒内不同时间间隔下自我加工优势是否存在分段性差异仍存在争议。本研究通过两个实验考察秒内不同时距下的自我加工优势效应。实验1采用自我时距比较任务,探讨自我相关刺激对秒内时距知觉判... 客观时距会影响自我相关刺激下的时距知觉,但秒内不同时间间隔下自我加工优势是否存在分段性差异仍存在争议。本研究通过两个实验考察秒内不同时距下的自我加工优势效应。实验1采用自我时距比较任务,探讨自我相关刺激对秒内时距知觉判断的影响。结果发现,在长时距条件下,与陌生人相比自我的主观相等点更长,表明秒内长时距下个体对自我相关刺激的时长存在低估现象。实验2采用知觉匹配范式,探讨自我对秒内时距知觉过程的影响。结果发现,不同秒内时距下,自我相关信息的累积速率漂移率(v)和非决策时间(t)均优于陌生人条件,且在长时距下自我的决策阈限(a)和决策偏好(z)显著高于陌生人条件。综上,自我相关刺激在秒内时距知觉上存在加工优势,且该优势存在分段性差异。 展开更多
关键词 自我相关刺激 秒内时距 时距知觉 漂移扩散模型 自我加工优势
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